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International Journal of Dentistry
Volume 2013, Article ID 918010, 6 pages
http://dx.doi.org/10.1155/2013/918010
Research Article

Effect of Dentin Biomodification Using Naturally Derived Collagen Cross-Linkers: One-Year Bond Strength Study

1Department of Dental Materials, University of Sao Paulo, Avenida Professor Lineu Prestes 2227 Cidade Universitaria, 05508-000 Sao Paulo, SP, Brazil
2Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, 801 S Paulina Street, Chicago, IL 60612, USA
3Department of Operative Dentistry, University of Brasilia, Campus Universitário Darcy Ribeiro—70910-900 Brasília, DF, Brazil

Received 12 October 2012; Accepted 17 June 2013

Academic Editor: Roland Frankenberger

Copyright © 2013 Carina S. Castellan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose. This study investigated the long-term resin-dentin bond strength of dentin biomodified by proanthocyanidin-rich (PA) agents. Materials and Methods. Forty molars had their coronal dentin exposed, etched, and treated for 10 minutes with 6.5% grape seed extract (GSE), 6.5% cocoa seed extract ethanol-water (CSE-ET), 6.5% cocoa seed extract acetone-water (CSE-AC), and distilled water (CO). Samples were restored either with One-Step Plus (OS) or Adper Single-Bond Plus (SB). Bond strength test was performed immediately or after 3, 6, and 12 months. Results. Higher μTBS were observed for GSE immediately (SB- 62.9 MPa; OS- 51.9 MPa) when compared to CSE-ET (SB- 56.95 MPa; OS- 60.28 MPa), CSE-AC (SB- 49.97 MPa; OS- 54.44 MPa), and CO (SB- 52.0 MPa; OS- 44.0 MPa) ( ). CSE outcomes were adhesive system and solvent dependant. After 12 months storage SB results showed no difference among treatment types (GSE- 57.15 MPa; CSE/ET- 54.04 MPa; CSE/AC- 48.22 MPa; CO- 51.68 MPa; ),while OS results where treatment dependent (GSE- 42.62 MPa; CSE/ET- 44.06 MPa; CSE/AC- 41.30 MPa; CO- 36.85 MPa; ). Conclusions. GSE and CSE-ET agents provided enhanced immediate adhesion and stabilization to demineralized dentin after long-term storage, depending on adhesive system.